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3 SheetsShe-et 1.

(No Model.)

B. K. BOYLE.

TELEGRAPHY.

Pat ented Dec. 9-, 1884.

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(No-Model.) 3 Sheets-Sheet 2. R. K. BOYLE.

TEL-BGRAPHY.

Patented Dec. 9, 1884.,

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3 Sheets-Sheet 3.

(No Model.)

R. K. BOYLE.

TELEGRAPHY.

I No. 309,126. Patented Dec. 9, 1884!.

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Nl'lflED dramas Parana Orrrcn,

ROBERT KIRK BOYLE, OF BROOKLYN, NEXV YORK, ASSIGN OR TO HIMSELF, JAMES M. PRENDERGAST, OF BOSTON, 'MASSAOHUSETTS, AND DANIEL H. CRAIG, OF NE\V YORK, N. Y.

TELEGRAPHY.

SPECIFICATION forming part of Letters Patent No. 309,126, dated December 9, 18845.

(No model.)

To all whom it may concern:

Be it known that I, ROBERT KIRK BOYLE, a subject of the Queen of Great Britain, residing at Brooklyn, in the county of Kings and State of ew York, have invented new and useful Improvements in Telegraph Apparatus, of which the following is a specification.

This invention relates to a telegraph apparatus which is intended particularly for sub- Io marine cables, or for a system of telegraphing in which alternate positive and negative electric impulses are sent over the line.

The peculiar and novel construction of my apparatus is pointed out in the following specir5 fication and claims, and illustrated in the ac companying drawings, in which Figure 1 represents a side elevation. Fig. 2 is a sectional plan of a portion of the apparatns. Fig. 3 isa plan or top View, partly in section. Fig. 4 is a horizontal section in the plane 00 m, Fig. 1, on a larger scale than the previous figures. Fig. 5 is a face view oft-he pen and the means for supporting the same. Fig. 6 is a diagram illustrating the connection of the various parts.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a large electro-magnet, which is permanently charged with electricity from a strong local 0 battery, B, Fig. 6.

Between the jaws A A of the electro-magnet extend vertical wires 10 and 11, which are supported by the following means:

On the under surface of the base 0, (which 3 5 is of wood or other bad conductor of electricity,) are secured twobrackets, a b, in each of which is secured a stud, a b, respectively,

' and on the stud a is secured a wire, 10", while on the stud I) is secured a wire, 11". Each of 40 these wires is provided with an insulatingsection, 10* 11*, respectively, and the upper ends of said wires are secured to axles 0 (l, respectively, which turn freely in bearin gs formed on standards 0 d, and which are pro- 4 5 vided with buttons 0 d and with tighteningnuts 0 (1". By turning the buttons 0 d" in the proper direction the wires 10 11 can be tightened, and when they have acquired the requisite tcnsion the axles 0 (Z are locked by the nuts 0 d. The wires 10 and 11 are bent at their upper and lower ends, and fastened to the wires 10 11", respectively, as shown in Figs. 1, 3, and 6, the bent portions of said wires being designated by 10 and 11 respective] y. 5 5

From the wire 10 extends an arm, 12, and from the wire 11 extends an arm, 13. The outer end of the arm 12 is provided with a hook which engages with an eye formed at the outer end of an arm, 14, which extends from a wire, 15. This wire passes loosely through holes in lugs e f, which extend from a bracket, 9, in the upper end of which is secured a hair, h, from which the wire 15 is sus pended. The lower end of the wire 15 dips into mercury contained in a cup, i.

From the wire 15 extends a second arm, 16, beneath the arm 14, Figs. 1 and 4, between contact-points 17 18, which rise from the insulated head j of a slide, D. This slide is guided in lugs It 74., secured in one side of a block, E, of hard rubber or equivalent mate rial, which is fastened on the base O. From the slide D extends a pin, Z, into aslot formed in an arm, m, which extends from a spindle, 7 5 0, which turns freely in its bearings, and round this spindle is wound a cord, p, extending from one end of a spring, 1), so that when the spindle is free to follow the action of this spring the slotted arm on carries the slide D So outward; but when the spindle is turned so as to wind up this spring the slide D is carried inward.

On the spindle o is mounted a ratchetwheel, g, which is subjected to the action of a propelling-pawl, q, and of a stop-pawl, q, the latter serving to retain the ratchet-wheel q against the action of the spring p at the time the pawl q is moved back. The propellingpawl is 'L-shaped, and it is mounted on a pin, 0 q", secured in an arm, which is connected with a lever, I, the fulcrum of which is 011 a stud, 9 secured in the block E, and which carries the armature F of an electro-magnet, F. The stop-pawl g is made in the form of a spring 5 secured to an arm, r, which is connected to a lever, G the fulcrum of which is on a stud,

r, and which carries the armature G of an electro-magnet, G. The propelling-pawl is subjected to the action of a spring, 8, which acts on a pin, 8 projecting from the tail of said L.-shaped propelling-pawl, and it is normally held in gear with the ratchet-wheel g by the action of this spring.

From the armature-lever G' extends an arm, 1 which bears against the pin 8", and from said lever G extends another arm, a", which is intended to act on the stop-pawl (1 In the arm 1" is secured a secondary stoppawl, q. Vhenever the armature F is attracted the pawl q is drawn back, and when the armature is retracted the pawl q propels the ratchet-wheel q in the direction of the arrow marked on it in Fig. 1. The slide D moves inwardly, and the cord p", connected with the spring 1), is wound up on its spindle 0 by such movement of the armature-lever F, and by alternately magnetizing and demagnetizing the electromagnet F several times in succession the slide D will be moved inward for any desired distance. WVhen the armature G is attracted, both the propelling-pawl q and the stop-pawl g are thrown out of gear with the ratchet-wheel q, one by the arm 0-, which acts upon pin 8", projecting from the downwardly-extending arm of the pawl q, and the other by the arm 1', which acts directly upon the tip of the pawl If. The spindle o is then free to follow the action of or be controlled by the action of the spring 1), and the slide D is carried outward; but this outward motion is checked by the secondary stop-pawl q which is thrown into gear with the ratchet-wheel instantaneously alter the pawls q 1 have been raised out of engagement, so that the outward motion of the slide-D is limited, the ratchetwheel qbeing permitted to revolve in the direction opposite to the arrow marked thereon only for one tooth. At the same time the break between the arm 16 and contact-point 17 does not take place at once, and the armature G vibrates continuously until a complete break is made and the ratchet-wheel turhs for several teeth. On the opposite side of the block E is situated the slide D and two elcctro magnets, which act upon the slide in the same manner in which the electroanagnets F G act upon the slide D, I

In the head of the slide D* are secured two contact-points,17 18*, between which extends an arm, 16*, extending from a wire, 15*,which connects by an arm, 14*, with the arm 13, extending from the wire 11. The wire 15* dips into a mercury-cup, i all these parts being counterparts of the devices connected. with the slide D and wire 10, so that they require no further description.

On the front or outer end of the slide D* is secured a short tube, t, and on the outer end of the slide D is secured a guide, 1.. (Best seen in Fig. 5.)

l is the pen, which is made in the form of a siphon, its rear end being supported by the tube t and passing through this tube into the ink-well Q, while its shank passes through a hole in the guide it and is bent, so as to bring the tip of said pen to bear upon. the strip of paper S, which is drawn over the support R by clock-work or other means generally used for this purpose. From this description it will be seen that when the slide D is movetL the inner end of the pen]? swivels in the tube t, and the tip of the pen follows the motion of the slide; but if the slide D is moved, the pen turns in the guide 25 and its tip moves in a direction opposite to that of the slide.

Above the block E are situated two relaymagnets, H I, Figs. 1 and 2, the armatures 1* of which are mounted on rock-shafts h" '6 and extend through the centers of the mag.- nets, being held in contact with. dead-stops h i, respectively, by the action of springs hl i When the relay-magnets are vitalized, their armatures are drawn up against the front stops, h i

I will now proceed to describe the operation of my apparatus with relation to Fig. 6. It must be remembered that the electric impulses sent through the cable 7 are alternately positive and negative. If an electric current of a given kindsay a positive currcntpasses from the cable through screw 1) to wire 11, thence through standards c c and wire 10 to wire 10, and through screw a to ground, the wires 10 and 11 are repulsed by the jaws of the electro-magnet in the direction of the arrows 19 and 20, the arm 12 of wire 10 turns wire 15 and throws arm 16 against eontact-point17, a circuit is closed from local battery 13* through wire 21, mercury-cup 1, wire 15, arm 16, contact-point 17, wire 22, helix of electro-magnet G, and wires 23 24 back to battery 13*, the electro-magnet G is vitalized, the armature G, Fig. 1, is attracted, the pawls g are thrown out of gear with ratchetwheel q, the spindle 0 follows the action of the spring 1), and the slide D moves outward, and a short oblique mark is traced on the strip of paper. By a succeeding electrical impulse of the samekind a second mark is drawn 011 the 'stri p of paper, so that by four positive impulses the letter 11 is produced, as shown in Fig. 4. By the movement of the slide D the contactpoint 17 is drawn away from the arm 16, the circuit through electromagnet G isbroken, and the movement of the slide 1) is arrested. The current may press the wire 16 with so much force against the contact-point 17 (both said wires being elastic) that it may require a movement of the ratchet-wheel of several teeth to move the slide suflieiently away to break contact between arm 16 and contact point 17, and when the contact is broken the slide is at rest until the current on the cable ceases. As soon as this takes place the wire 10 falls back to its normal position, the arm 16 is brought up against contact-point 18, a circuit is closed from battery 15* through wire 21, mercurycup t, wire 15, arm 16, contact-point 18, wire 26, helix of eleetro-magnet F, and wires 25 24 back to the battery, the armature F, Fig. 1, is attracted, and the ratchet-wheel q is turned so as to wind up springp and to move the slide D inward until the arm 16 ceases to be in contact with contact-point 18. In this position the slide is at rest, and by the inward movement of the slide the point of the pen has been carried back to the center line of the paperstrip. The movement imparted to the tip of the pen is increased by the movement of the slide D*, which is in a direction opposite to that of the slide D. WV hen the current com in g from the cable is negative, the wires 10 and 11 are forced toward each other and the movements of theslides D D* are reversed, so that by two negative impulses the letter 1 is traced upon the strip of paper, as indicated in Fig. If there is no current in the cable, the pen P occupies a position over the center line of the strip of paper, and by positive electric impulses the pen is moved toward the left of the center line, Fig. 4, while by negative impulses it is moved toward the right.

The system of recording characters to rep resent letters or other arbitrary symbols will be sufficiently understood from the above description, since it is evident that different movements, dots, or spaces maybe understood to represent any arbitrary symbols as agreed upon.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, 'in a telegraplrinstrument, of a permanent]y-charged electromag net having jaws A and A of the wire 10, stretched between said jaws and forming a continuation of the line or cable, the slide D, the pen or recording device connected with said slide, and mechanism, substantially as described, for operating the slide D or pencarrier by the attraction or repulsion of wire 10, as herein set forth.

2. The combination,substantially as hereinbefore described, with the pern'iammtly charged electro-magnet, of the wire 10, which forms a continuation of the line or cable. and which is stretched between the jaws of the electro-magnet, the arm 12,- extending from said wire and acting on wire 15, the arm 16, extending from this wire, the contactpoints 17 and 18, secured in the head of the slide D, and mechanism substantially such as herein described, said mechanism being controlled by the position of the arm 16 in relation to the contact-points 17 and 18, and serving to impart motion to the slide D. p

3. The combination, with the permanentlycharged electro-magnet, of a wire, 10, which forms a continuation of the line or cable, and which is stretched between the jaws of the electromagnet, the arm 12, extending from said wire and acting on wire 15, the arm 16, extending from this wire, the contact-points 17 and 18, secured in the head of the slide D, the spring-propelled spindle 0, connected to the slide, the ratchet-wheel q, mounted on this spindle, the electro-magnets F G for controlling the motion of the spindle 0 and their connections, substantially as shown and dc scribed.

l. The combination, with the permanentlycharged electro-magnet, of a wire, 10, which forms a continuation of the line or cable, and which is stretched between the jaws of the electro-magnet, the arm-12, extending from said wire, the suspended wire 15, the arm 16, extending from this wire, the contact-points 17 and 18, secured in the head of the slide D, the mercury cup i, the spring-propelled spindle 0, connected to the slide, the local battery 13*, the electro-magnets F G- and their connections, substantially as shown and described.

The combination, with the permanentlycharged electro-magnet, of two wires, 10 and 11, which form a continuation of the line or cable, and are stretched between the jaws of the electrounagnet, the arms 12 and 13, extending from said wires, two slides which carry the pen or recording device, and mechanism substantially such as herein described, said mechanism being actuated by the attraction and repulsion ot' the wires 10 and 11, and serv ing to impart motion to the slides.

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing wit ncsses.

OBERT KIRK BOYLE.

\Vitnesses:

W. I-Lrnrr, E. F. KAsrENnUnnn. 

